Product Feature : - • SDR • DDR • DDR 2 • So DIMM Product Specifications :- SDR - Capacity & Frequendy: - • 128MB SDR 100-133 • 256MB SDR 100-133 • 512MB SDR 100-133 DDR - Capacity & Frequendy: - • 128MB DDR 266-400 • 256MB DDR 333-400 • 512MB DDR 333-400 • 1GB DDR 333-400 • 2GB DDR 333-400 DDR 2 - Capacity & Frequendy: - • 256MB DDR2 400-667 • 512MB DDR2 400-667 • 1GB DDR2 400-667 SO DIMM - Capacity & Frequendy: - • 256MB SO DIMM 133-677 • 512MB SO DIMM 133-667 • 1GB SO DIMM 133-667 Additional Information :- • 50 pcs per carton - Uncover • 25 pcs per carton - cover